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Stockfish 17.1 vs Mid-range Chess Engines (Tests by Jörn Gronemann, 2025.11.26)

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Stockfish 17.1 is holding strong! This was demonstrated by another tournament in which Stockfish tested the strength of engines aspiring to Elite status. Obsidian dev-16.15 SE and PlentyChess 7.0.23 performed best, taking 2nd and 3rd place.


CEDR 773.114 games download (01.11.2025)
GPU NVIDIA  RTX 3060 ti. GUI-Banksia, For Every Engine only 1 CPU and 512 Hashtables,  Book - 4 GM mvs   book,  6TBs.
🕒🕒Time 3'+3"   Tournament download with 900 games 
#chessenginesdiary

P Engine Score (Tie) +/-/=
1: Stockfish 17.1 101.0 / 180 8928.75 (+24 -2 =154)
2: Obsidian dev-16.15 SE 96.5 / 180 8562.25 (+17 -4 =159)
3: PlentyChess 7.0.23 95.0 / 180 8456.00 (+13 -3 =164)
4: Reckless 0.9.0-dev 93.5 / 180 8362.75 (+8 -1 =171)
5: Integral 7.0.0 dev JA 92.5 / 180 8262.75 (+11 -6 =163)
6: Alexandria 8.1.2 JA 88.5 / 180 7957.50 (+1 -4 =175)
7: Berserk 20250622 86.0 / 180 7747.25 (+4 -12 =164)
8: Clover 9.1 JA 84.5 / 180 7621.00 (+4 -15 =161)
9: RubiChess 2025 81.5 / 180 7365.25 (+4 -21 =155)
10: Horsie 1.1.0 81.0 / 180 7328.00 (+4 -22 =154)






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